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|Section2= |Section3= |Section4= |Section5= }} ''n''-Butanol or ''n''-butyl alcohol or normal butanol is a primary alcohol with a 4-carbon structure and the chemical formula C4H9OH. Its isomers include isobutanol, 2-butanol, and ''tert''-butanol. Butanol is one of the group of "fusel alcohols" (from the German for "bad liquor"), which have more than two carbon atoms and have significant solubility in water. ''n''-Butanol occurs naturally as a minor product of the fermentation of sugars and other carbohydrates,〔.〕 and is present in many foods and beverages.〔.〕〔.〕 It is also a permitted artificial flavorant in the United States,〔21 C.F.R. § 172.515; 42 FR 14491, Mar. 15, 1977, as amended.〕 used in butter, cream, fruit, rum, whiskey, ice cream and ices, candy, baked goods and cordials.〔, cited in .〕 It is also used in a wide range of consumer products.〔 The largest use of ''n''-butanol is as an industrial intermediate, particularly for the manufacture of butyl acetate (itself an artificial flavorant and industrial solvent). It is a petrochemical, manufactured from propylene and usually used close to the point of manufacture. Estimated production figures for 1997 are: United States 784,000 tonnes; Western Europe 575,000 tonnes; Japan 225,000 tonnes.〔 ==Production== ''n''-Butanol is produced industrially from the petrochemical feedstock propylene. Propylene is hydroformylated to butyraldehyde (oxo process) in the presence of a rhodium-based homogeneous catalyst similar to Wilkinson's catalyst. The butyraldehyde is then hydrogenated to produce ''n''-butanol.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「N-Butanol」の詳細全文を読む スポンサード リンク
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